87654973 has 12 divisors (see below), whose sum is σ = 102386592. Its totient is φ = 74823000.

The previous prime is 87654901. The next prime is 87654979. The reversal of 87654973 is 37945678.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-87654973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87654979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8736 + ... + 15862.

It is an arithmetic number, because the mean of its divisors is an integer number (8532216).

Almost surely, 2^87654973 is an apocalyptic number.

It is an amenable number.

87654973 is a deficient number, since it is larger than the sum of its proper divisors (14731619).

87654973 is a wasteful number, since it uses less digits than its factorization.

87654973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7392 (or 7385 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 49.

The square root of 87654973 is about 9362.4234576310. The cubic root of 87654973 is about 444.2139437106.

The spelling of 87654973 in words is "eighty-seven million, six hundred fifty-four thousand, nine hundred seventy-three".